Not quite correct. The head height is the maximum height the pump will pump to with zero flow, normally for aquatic pumps in 1-2 meter range. Size of pipe, bends, diameters etc doesn't make any difference to max head height there is no flow. Size of pipe, bends etc only makes a difference to the flow.The quoted flow rates are normally at 0 head height. Manufacturer's saying that 2m is max head height means that if that pump's inlet is positioned 2 meters below the outlet(if outside the tank for example), then it will have theoretically 0 flow at that distance. But that would be even less in practice, because it doesn't take into account the size of the hoses used, connector diameters, bends, obstructions/media, etc..
Not quite correct. The head height is the maximum height the pump will pump to with zero flow, normally for aquatic pumps in 1-2 meter range. Size of pipe, bends, diameters etc doesn't make any difference to max head height there is no flow.
Wrong.....pressure for a column of liquid is given by P=hρg.It does in my opinion.
The head height is actually the amount of pressure the pump can apply to push the water up. When you have a narrower than ideal pipe, the pump needs to put more pressure in order to push the water up, and in the same logic it needs less pressure with wider piping and no other obstructions. So a pump obstructed by narrower pipes, bends, etc.. will need to work harder to apply enough pressure and that will affect the head height/the vertical distance it can manage to push the water up to. Which of course in turn is another thing that adds to the pressure needed by the pump. The higher the head height, the more pressure needed by the pump to push water.
Basically they are all related and depend on each other for maximum performance.
Wrong.....pressure for a column of liquid is given by P=hρg.
P=Pressure in Pascals, h=height in metres, ρ= density in Kg/m3 and g=acceleration due to gravity (10m/s2). No where in this simple equation is the size of pipe, bends etc needed. Fundamental school boy physics.
Doesn't matter if the pipe is 10cm in diameter or 4mm in diameter, or has 50 million bends in it the pump will only pump to its max head height given by P=hρg.
Here bursting of barrel depends only on height not on type or pipe.
Pascal's barrel - Wikipedia, the free encyclopedia